Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Besaw, NP
Nurse Practitioner in Harwich, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689717563
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Registry record
Entity type Individual (Type 1)
Name John Besaw
Credential NP
Sex Male
Practice address 525 Long Pond Drive, Harwich, MA, 02645
Phone (508) 430-3322
Enumeration date Feb 14, 2007
Last updated in NPPES May 6, 2016
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 300873 (NY) Primary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN2288755 (MA) Secondary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Besaw?
John Besaw is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Patricia Ryan-Blanchard Adult Health Nurse Practitioner · Harwich, MA NPI 1639144421 Nevine Henin Family Medicine Physician · Harwich, MA NPI 1982672473 Josephine Whelan Nurse Practitioner · Harwich, MA NPI 1427000983 Monica Smith Medical Oncology Physician · Harwich, MA NPI 1558309336 Eldad Rosenthal Internal Medicine Physician · Harwich, MA NPI 1124036751 Mary Secor Physical Therapist · Harwich, MA NPI 1588865893
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-06.